taught
Some examples include "read" (present) and "read" (past participle), "cut" (present) and "cut" (past participle), "hit" (present) and "hit" (past participle), and "put" (present) and "put" (past participle).
I can provide a few examples: Present: write, Past: wrote, Past Participle: written Present: eat, Past: ate, Past Participle: eaten Present: run, Past: ran, Past Participle: run Present: speak, Past: spoke, Past Participle: spoken For a comprehensive list, I recommend using online resources or grammar books.
The past participle of do is done. The past participle of have is had.
Here are some examples of the present form, past form, and past participle form verbs: Present - Past - Past Participle eat - ate - had eaten walk - walked - had walked jog - jogged - had jogged sing - sang - had sung drink - drank - had drunk play - played - had played
The past participle of am is been. Not does not have a past participle